Yesterday I lost all input signals on myTascam US 224's XLR and line inputs.

The unit has power and plays files without a problem.

I have checked my input mikes and cables and they are fine too.

Is there anything other than component failure that may cause a problem like this? (perhaps software related?) I have reinstalled both the Tascam unit and my Cubase VST software but the problem remains.

Any advice will be apreciated. I am currently in South Korea, and with the demise of Tascam's support forum :-( I'm not sure what to do.

I would hate to send the unit back to the states for repair, and then find that there was a simple fix.

Thank you